1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet;
24  
25  import com.liferay.portal.kernel.util.Validator;
26  
27  import java.util.Collection;
28  import java.util.Map;
29  import java.util.concurrent.ConcurrentHashMap;
30  
31  import javax.servlet.http.HttpSession;
32  
33  /**
34   * <a href="PortalSessionContext.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   */
38  public class PortalSessionContext {
39  
40      public static int count() {
41          return _instance._count();
42      }
43  
44      public static HttpSession get(String sessionId) {
45          return _instance._get(sessionId);
46      }
47  
48      public static void put(String sessionId, HttpSession session) {
49          _instance._put(sessionId, session);
50      }
51  
52      public static HttpSession remove(String sessionId) {
53          return _instance._remove(sessionId);
54      }
55  
56      public static Collection<HttpSession> values() {
57          return _instance._values();
58      }
59  
60      private PortalSessionContext() {
61          _sessionPool = new ConcurrentHashMap<String, HttpSession>();
62      }
63  
64      private int _count() {
65          return _sessionPool.size();
66      }
67  
68      private HttpSession _get(String sessionId) {
69          if (Validator.isNull(sessionId)) {
70              return null;
71          }
72  
73          return _sessionPool.get(sessionId);
74      }
75  
76      private void _put(String sessionId, HttpSession session) {
77          _sessionPool.put(sessionId, session);
78      }
79  
80      private HttpSession _remove(String sessionId) {
81          return _sessionPool.remove(sessionId);
82      }
83  
84      public Collection<HttpSession> _values() {
85          return _sessionPool.values();
86      }
87  
88      private static PortalSessionContext _instance = new PortalSessionContext();
89  
90      private Map<String, HttpSession> _sessionPool;
91  
92  }